Free Online Spreadsheet Cleaner
Whatever's in your spreadsheet, Clean That Sheet helps you get your sheet together. One upload, one cleanup, one download.
Spreadsheets are how the world actually runs — customer lists, vendor sheets, inventory, sales pipelines, survey results, recruiting trackers, side project budgets, the data behind every monthly report. And every single one of them gets messy. People type things slightly differently. Exports come in inconsistent formats. Rows get duplicated. Empty rows multiply. By the time you actually need to use the file, it needs an hour of cleanup first.
Clean That Sheet is the universal cleanup step. Upload any .csv, .xlsx, or .xls file and we'll handle the predictable mess: duplicate and near duplicate rows, leading and trailing whitespace, inconsistent casing on names and emails, mixed date formats, empty rows, and messy column headers. The output is the same file, just usable.
It's built for non technical users on purpose. There's no formula to write, no macro to debug, no Python script to maintain, no "connect your data warehouse" wizard. You drop in a file, you see a free preview, you pay $1.99 if it looks right, and you download a clean version. That's the whole product.
If you clean spreadsheets a few times a month — exporting customer data before a campaign, prepping a vendor list before an import, deduping a survey response file, cleaning up a CRM export before handing it to a teammate — this is the tool we wish existed when we were doing the same thing by hand. Bring your messiest sheet. It'll be fine.